12640624101 has 32 divisors (see below), whose sum is σ = 21410534400. Its totient is φ = 7220372400.

The previous prime is 12640624097. The next prime is 12640624123. The reversal of 12640624101 is 10142604621.

12640624101 is a `hidden beast` number, since 1 + 2 + 640 + 6 + 2 + 4 + 10 + 1 = 666.

It is not a de Polignac number, because 12640624101 - 2² = 12640624097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640624141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 527110 + ... + 550568.

It is an arithmetic number, because the mean of its divisors is an integer number (669079200).

Almost surely, 2^12640624101 is an apocalyptic number.

It is an amenable number.

12640624101 is a deficient number, since it is larger than the sum of its proper divisors (8769910299).

12640624101 is a wasteful number, since it uses less digits than its factorization.

12640624101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26326 (or 26320 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 12640624101 in words is "twelve billion, six hundred forty million, six hundred twenty-four thousand, one hundred one".